CN101685729A - Free tripping mechanism of switchgear - Google Patents
Free tripping mechanism of switchgear Download PDFInfo
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- CN101685729A CN101685729A CN200810166905A CN200810166905A CN101685729A CN 101685729 A CN101685729 A CN 101685729A CN 200810166905 A CN200810166905 A CN 200810166905A CN 200810166905 A CN200810166905 A CN 200810166905A CN 101685729 A CN101685729 A CN 101685729A
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Abstract
The invention relates to a free tripping mechanism applied to a breaker, an isolating switch and a load switch. A tripper comprises an overload tripper and/or a short-circuit tripper and also comprises an operation mechanism mounting bracket, a lock catch and a jump catch, wherein a relatch plate for realizing secondary transmission between the tripper and the lock catch is mounted on the bracket;the transition surface of the relatch plate is used as a base from which a pair of supporting frames, a traction plate, a stopping piece and a positioning claw are extended; the traction plate is matched with the tripper for operation; the stopping piece prevents the transition rotation of the relatch plate after the tripper is separated; the positioning claw controls the locking depth; relatch plate shaft holes and a lock catch contact surface are arranged on the supporting frame; and a bending angle alpha of 120-150 degrees is formed between the traction plate and the transition surface. The invention shortens a tripping transmission chain, realizes the secondary transmission tripping from the tripper to the lock catch, shortens the separation time and decreases the cost; and the relatch plate has simple and light structure and flexible mounting position and ensures that the tripping mechanism operates stably and reliably.
Description
Technical field
The present invention relates to a kind of free tripping mechanism of switchgear, be applicable to circuit breaker, isolating switch, miniature circuit breaker, on-load switch etc., particularly relate to a kind of 2 grades of formula free tripping mechanisms of moulded case circuit breaker.
Background technology
Release produces the free tripping mechanism the make the breaker operator system required external force of threading off, and the overcurrent trip protected mode of existing breaker of plastic casing relates generally to two kinds of short circuit instantaneous protection and overload protections, and its concrete scheme as shown in Figure 1 and Figure 2.Wherein Fig. 1 has shown the structural representation after existing free tripping mechanism is assembled, and Fig. 2 is the schematic diagram after equipment component shown in Figure 1 is decomposed.
The principle that the release of existing breaker of plastic casing drives the free tripping mechanism action is as follows:
One, when circuit is short-circuited, short circuit current is through the yoke 10 ' of release, yoke 10 ' can induce very strong magnetic field, armature 6 ' is moved under the action of a magnetic field, the top 6a ' of described armature 6 ' triggers the draw bar 4 ' in the free tripping mechanism, and draw bar 4 ' is rotated around draw bar axle 5 '; Lug boss 4a ' on the described draw bar 4 ' draws buckle 1 ' around buckle axle 2 ' rotation more again in draw bar 4 ' rotation process.Then, the rotation of buckle 1 ' makes buckle 1 ' and snap close 13 ' release again again; Snap close 13 ' after the release rotates around snap close axle 16 ' as shown in the figure, make the overlapping part release of tripping 15 ' and snap close 13 ', tripping 15 ' moves upward, and the release of whole operation mechanism is threaded off, thereby dynamic and static contact is separated fast, and the realization circuit breaker is cut off the electricity supply.
Two; when overload takes place in line load; overload current flows through heater element 12 '; the heat of its generation conducts to close-connected bimetal leaf 7 ' with it; bimetal leaf 7 ' heated bending; adjustment screw 8 ' on it is subjected to displacement; thereby at first trigger in the free tripping mechanism one and have switching; the draw bar 4 ' of transmission agency; the transmission process of described free tripping mechanism in overload protection is identical with transmission process in the short-circuit protection; as a transitional element, traction triggers buckle 1 ' more then by draw bar 4 '; snap close 13 '; tripping 15 ' waits follow-up equipment.
The versatility releasing structure of the product of each major company (as Schneider, ABB etc.) all adopts the 3 grade drive mechanisms similar with said structure in the world at present, 3 grades of dropout driving-chain structures that this 3 grades of dropout driving-chain structures such as Chinese patent CN02282702.1 are disclosed.But this through draw bar-3 grades of dropout driving-chain structures of buckle-snap close have following deficiency again:
1, no matter be the dropout action that short-circuit protection or overload protection produce, active force is not to act directly on the buckle 1a ' again, but must finish by the transmission once more of draw bar 4 '.The dropout mode driving-chain of this 3 grades of transmissions is longer, plays operating mechanism from short circuit current moment and disconnects moment and end, and break-time is long, mechanism action speed is slow, and the energy that produces during disjunction is many, causes shell to burst, the silver point scaling loss is serious, to the requirement of mechanical strength height of parts.
2, in order to realize that 3 grades of drive mechanisms need the multiple tracks assembly process, assembling process complexity, cost are higher.
3, draw bar 4 ' generally is injection molded, and (draw bar axle 5 ') is the turning part, and easily contraction distortion is difficult to controlling dimension in the injection molding process, has increased processing cost; And because it contacts with adjustment screw 8 ', therefore this traction piece heatproof is had relatively high expectations, the part material cost is higher.
4, the independently draw bar 4 ' in this 3 level structures mostly is tubular structure, causes draw bar 4 ' can only be installed near release one side, and is far away from snap close, tripping; Because the vibration that each actuated element all can produce certain amplitude under the effect of tripping force in the dropout process, this multicomponent, the structure of disperseing to install must cause the disorder of integral device vibration frequency, poor synchronization, and external manifestation is easy slide fastener, system's instability.
5, the structure of existing draw bar 4 ' is independently, is difficult in the practice tripping force size and delayed releasing are adjusted, and also should not control the degree of depth of snap close.
Summary of the invention
The invention provides a kind of technical scheme that is 2 grades of transmission dropout patterns with 3 grades of transmission dropout mode-conversion, by free tripping mechanism is carried out design improvement, omit independently draw bar 4 ' and draw bar axle 5 ', 2 grades of transmission modes have been realized, the above defective and the deficiency of prior art have not only been solved, shorten break-time, and improved the product breaking capacity, reduced manufacturing cost.
To achieve these goals, the present invention adopts following technical scheme.
A kind of free tripping mechanism of switchgear, the release that the support 22, that described switchgear comprises contact apparatus, operating mechanism, a fitting operation mechanism is installed on the snap close 13 on the described support 22, a tripping 15 that matches with snap close 13 and is made up of overload release and/or short-circuit release by snap close axle 16, described short-circuit release comprises a yoke 10 and the armature 6 by yoke control; Described overload release comprises a heater element 12, a bimetal leaf 7 that links to each other with heater element 12 and an adjustment screw 11 that is positioned at bimetal leaf 7 tops, the free tripping mechanism of described operating mechanism has a buckle again 1 that is used to realize 2 grades of transmissions between at least one described release and the snap close 13, described buckle again 1 is between release and the snap close 13, and pass through buckle axle 2 again, be rotatably mounted on the described support 22.
Described buckle again 1 is formed with transition face 31; Pair of supporting 32 is positioned at the both sides of described transition face 31, be symmetricly set on the support frame as described above 32 with the axis hole of buckle again 35 of buckle axle 2 cooperatings again, be formed with the snap close contact-making surface 37 of protrusion on the support frame as described above 32, buckle 1 is by the snap close contact-making surface 37 and snap close 13 cooperatings of described protrusion again.Extend a locating detent 39 with support 22 cooperatings on the transition face 31 of described buckle again 1, with determine under the snap close state again buckle 1 with respect to the position of support 22 and snap close 13 thereof by the lock degree of depth.
In nearly tripping one side of the transition face 31 of described buckle again 1, be provided with the retainer 38 with tripping 15 cooperatings, by retainer 38, the tripping 15 after the dropout suppresses the transition rotation of buckle 1 again.Described retainer 38 and have one 130 °～135 ° bending angle β again between the transition face 31 of buckle 1.Nearly release one side at the transition face 31 of described buckle again 1, be provided with a towing plate 33 with adjustment screw 11 cooperatings of the bimetal leaf 7 of the armature 6 of short-circuit release and/or overload release, has a bending angle α between described towing plate 33 and the described transition face 31,120 °≤α≤150 °.
Described towing plate 33 be provided with one with the switchgear housing on the towing plate branch 34 of emergency trip button cooperating, described towing plate branch 34 has an angle that more raises up than towing plate 33.
The adjustment screw 11 of described overload release and/or the armature 6 of short-circuit release are≤2mm 〉=10mm with the passive distance of towing plate 33 under normal operation.
This shows, the present invention is designed to substrate with the buckle again 1 of free tripping mechanism and adds a plurality of structures with the extension plate face at bending angle, under the situation of having omitted independent draw bar, the 2 grade driving-chains of realization from the release to the snap close, the free tripping mechanism of switchgear of the present invention have the advantage that shortens break-time and reduce manufacturing cost.Because the used buckle structure again of the present invention is simple lightly, the buckle shaft position chooses flexibly again, when guaranteeing delayed releasing, not only alleviated tripping force, improved the accuracy of the snap close degree of depth, and reduced the slide fastener rate, improved the stability and the reliability of whole free tripping mechanism.
Description of drawings
Fig. 1 is 3 level structure schematic diagrames of the free tripping mechanism of existing breaker of plastic casing;
Fig. 2 is the element decomposing schematic representation of 3 grades of dropouts of existing breaker of plastic casing shown in Figure 1, comprises release, independent draw bar and buckle again;
Fig. 3 is the three-dimensional element exploded view of a specific embodiment of free tripping mechanism of the present invention;
Fig. 4 is the preceding view of dropout of free tripping mechanism embodiment of the present invention;
Fig. 5 is the view after the disconnection of free tripping mechanism embodiment of the present invention;
Fig. 6 is the elevational view of the specific embodiment of buckle again of free tripping mechanism of the present invention;
Fig. 7 is the end view of the buckle again of free tripping mechanism of the present invention shown in Figure 6.
Specific embodiment
Below be example with the breaker of plastic casing, 3-7 illustrates a specific embodiment of the free tripping mechanism of switchgear of the present invention in conjunction with the accompanying drawings, the free tripping mechanism of switchgear of the present invention is not limited to the description of following examples.Free tripping mechanism of the present invention is not only applicable to circuit breaker, also applicable to fields such as isolating switch, miniature circuit breaker, on-load switches.
As shown in Figure 3, the release of circuit breaker is made up of short-circuit release and overload release.Described short-circuit release comprises a yoke 10 and the armature 6 by yoke control; Described overload release comprises a heater element 12, a bimetal leaf 7 that links to each other with heater element 12 and an insulation adjustment screw 11 that is positioned at the bimetal leaf top.Also be provided with a support 22 that is used to install all or part of operating mechanism of circuit breaker inside in the breaker of plastic casing, described support 22 can be the part of Shell of circuit breaker, also can be independent of outside the housing.A buckle 1 again is installed on the described support 22 by buckle axle 2 again.A snap close 13 is installed on the described support 22 by snap close axle 16.Also be provided with the tripping 15 of the work that matches with snap close 13 in the described circuit breaker, after snap close 13 releases, can trigger tripping 15 springs and make the release of whole operation mechanism.
The concrete structure of described buckle again 1 such as Fig. 6, shown in Figure 7, described buckle again 1 has a transition face 31, and it is again the flat-faced tube pedestal of buckle 1, is used to connect again other parts of buckle 1.Be respectively equipped with a bracing frame 32 in transition face 31 both sides, correspondence is provided with buckle axis hole 35 again on the support frame as described above 32, to the buckle axis hole again 35 and the cooperating of buckle axle 2 again, allows buckle 1 to rotate freely around buckle axle 2 again by this again.A reaction spring 3 that is used to again buckle 1 that tripping force is provided, its mounting means such as Fig. 3 are to shown in Figure 5, the one end hangs on the projection 36 of support 22, and the other end hangs on the support 22, and the mounting means of described reaction spring 3 also can be with reference to other reaction spring mounting meanss commonly used.In close snap close one side of the direction that rotatablely moves of bracing frame 32, be provided with the snap close contact-making surface 37 of protrusion, in the dropout process, along with the rotation of buckle 1 again, snap close contact-making surface 37 is and then rotation also, leaves snap close 13 until snap close contact-making surface 37, and snap close 13 is threaded off.Described snap close contact-making surface 37 can be symmetricly set on two bracing frames 32 of buckle 1 again, perhaps appears at separately on one of them bracing frame 32.
Also extend a locating detent 39 on the transition face 31 of buckle 1 again, under snap close state as shown in Figure 4, described locating detent 39 contacts with support 22, and under the effect of support 22, the position of buckle 1 is defined again; That is to say that size, the position of described locating detent 39 define the relative position of buckle 1 and support 22 again, thereby realize the accurate location of the snap close position of buckle 1 again, improved the buckle again 1 of positioning stablity degree, by the snap close contact-making surface 37 on it, realize snap close 13 by the accurate control of the lock degree of depth, to improve the stability of entire equipment operation.
In nearly release one side of the direction that rotatablely moves of the transition face 31 of buckle 1 again, extend a towing plate 33, be used to receive power, and/or receive power from the adjustment screw 8 of overload release from the armature 6 of short-circuit release.Described towing plate 33 and exist a bending angle α between the transition face 31 of buckle 1 again, because buckle 1 is not only being undertaken the effect of transmitting delayed releasing power again, also in transmittance process, reduce tripping force, therefore the towing plate 33 and bending angle α between the transition face 31 of buckle 1 can not be excessive again can not be too small.The arm of force reduces tripping force though bigger bending angle α helps extending, and the long arm of force is unfavorable for delayed releasing; Otherwise,, be unfavorable in transmission process, reducing tripping force though less bending angle α can reliably realize delayed releasing.Therefore in the present embodiment, bending angle α is greater than 90 °, and less than 180 °, suggestion is controlled at bending angle α between 120 ° and 150 °, and optimum is 135 °.In like manner, for the reliable delayed releasing of realizing, release and towing plate 33 passive distance (as shown in Figure 4) under normal operation generally remains on 2mm between the 10mm.
Because towing plate 33 is based on the extension design of transition face 31, therefore again buckle 1 when realizing traction function, be placed on the support 22 with still can guaranteeing again buckle axle 2 and snap close axle 16 relative compact, this design has reduced to shake the difference on the frequency that produces because of the equipment collision in the dropout process, guaranteed that each device frequency is consistent relatively, reduced the possibility of equipment slide fastener.
Also have a branch 34 on towing plate 33, the emergency trip button place (not shown) that is positioned on the Shell of circuit breaker is stretched in described towing plate branch 34, is used to receive the hand tripping power from the emergency trip button.In embodiment as shown in Figure 7, because the emergency trip button is positioned at the top of operating mechanism, therefore, towing plate branch 34 has an angle that more raises up than towing plate 33, and towing plate branch 34 planes of living in are almost parallel with transition face 31.Described towing plate 33 or towing plate branch 34 all can be under the effects of tripping force, and the each several part that drives whole buckle again 1 pivots, thus the transmission of realizable force.
Nearly tripping 15 1 sides in the direction that rotatablely moves of transition face 31, extend a retainer 38 to tripping 15 directions, at trip free state as shown in Figure 5, described retainer 38 when the dropout release and the shoulder of tripping 15 beat together, make again buckle 1 stop to continue rotation, thereby prevent that buckle comes off again downwards to the dropout direction.In order to cooperate stop buckle 1 again with tripping 15 better, can there be certain bending angle between described retainer 38 and the transition face 31, to produce effective stopping power, the bending angle β between described retainer 38 and the transition face 31 generally remains between 130 ° to 135 °.
By the technical scheme of the foregoing description, 3 grades of transmissions of original circuit breaker are threaded off becomes 2 grades of transmissions, and the miscellaneous part on the draw bar 4 ' and draw bar axle 5 ' and draw bar among Fig. 1, Fig. 2 is saved in the centre.Utilize technical solution of the present invention can also realize short-circuit protection and overload protection.Fig. 4 is the preceding working state figure of free tripping mechanism dropout, and described buckle again 1 goes out bracing frame 32, towing plate 33, retainer 38, locating detent 39 to the different directions extension from its transition face 31.Wherein, buckle 1 offsets with snap close 13 by the snap close contact-making surface 37 that is positioned at support 32 again, under the help of snap close 13, buckle 1 power that overcomes reaction spring 3 remains static again, this moment from the transition face 31 extended locating detents 39 of buckle 1 again and support 22 to supporting, thereby control again the degree of depth of being locked of buckle 1 and snap close 13, reduce tripping force.Be 135 ° of settings again between the towing plate 33 of buckle 1 and the transition face 31, keep the distance of 4mm between the armature 6a of towing plate 33 and release, the adjustment screw 11.The following describes the trip free operating process of short-circuit protection and overload protection.
1, short-circuit protection
When short circuit current through fixed contact 21, conducting system 20, during heater element 12 by release, because yoke 10 and heater element 12 rivet together, when electric current passes through heater element 12, yoke 10 can induce magnetic field, because there is characterization of adsorption in magnetic field to ferromagnetic material on every side, so armature 6 rotates under the effect of magnetic field force, the top 6a of armature 6 promotes the towing plate 33 of buckle 1 again, interlock drives transition face 31 around buckle axle 2 rotations again, the snap close contact-making surface 37 that is in again the protrusion on buckle 1 bracing frame also rotates forward, and the contacted with it snap close 13 of disengaging, thereby cause snap close 13 releases, release rear catch 13 is released and rotates around 16 releases of snap close axle, makes overlapping part 19 releases of tripping 15 and snap close 13, thereafter tripping 15 is upwards takeoff, make the release of whole operation mechanism, and, cut off the circuit breaker power supply by conducting system 20 motions.As shown in Figure 5, after snap close 13 releases, the rotation of under the effect of reaction spring, threading off of whole buckle again 1, the tripping 15 after release is takeoff is stuck on the retainer 38 of buckle 1 again, makes buckle 1 stop to continue the rotation of threading off again.
2, overload protection
Live flow through fixed contact 21, conducting system 20 have been served as, during heater element 12 by release, because thrermostatic bimetal-plate 7 and heater element 12 rivet together, as shown in Figure 4, when electric current passed through heater element 12, heater element 12 heatings were heated bimetal leaf 7 and are bent.Drive the towing plate 33 that adjustment screw 11 promotes buckle 1 again, interlock drives transition face 31 around buckle axle 2 rotations again, the snap close contact-making surface 37 that is in again the protrusion on buckle 1 bracing frame also rotates forward, and the contacted with it snap close 13 of disengaging, thereby cause snap close 13 releases, release rear catch 13 is released and rotates around 16 releases of snap close axle, make overlapping part 19 releases of tripping 15 and snap close 13, thereafter tripping 15 is upwards takeoff, make the release of whole operation mechanism, and cut off the circuit breaker power supply by conducting system 20 motions.As shown in Figure 5, after snap close 13 releases, the rotation of under the effect of reaction spring, threading off of whole buckle again 1, the tripping 15 after release is takeoff is stuck on the retainer 38 of buckle 1 again, makes buckle 1 stop to continue the rotation of threading off again.
Claims (8)
1. the free tripping mechanism of a switchgear, the support (22), one that described switchgear comprises contact apparatus, operating mechanism, a fitting operation mechanism is installed on snap close (13) on the described support (22), tripping (15) that matches with snap close (13) and the release of being made up of overload release and/or short-circuit release by snap close axle (16), and described short-circuit release comprises a yoke (10) and the armature (6) by yoke control; Described overload release comprises a heater element (12), a bimetal leaf (7) that links to each other with heater element (12) and an adjustment screw (11) that is positioned at bimetal leaf (7) top, it is characterized in that:
The free tripping mechanism of described operating mechanism has a buckle again (1) that is used to realize 2 grades of transmissions between at least one described release and the snap close (13), described buckle again (1) is between release and the snap close (13), and pass through buckle axle (2) again, be rotatably mounted on the described support (22).
2. the free tripping mechanism of switchgear according to claim 1 is characterized in that:
Described buckle again (1) is formed with transition face (31);
Pair of supporting (32) is positioned at the both sides of described transition face (31), be symmetricly set on the support frame as described above (32) with the axis hole of buckle again (35) of buckle axle (2) cooperating again, be formed with the snap close contact-making surface (37) of protrusion on the support frame as described above (32), buckle (1) is by the snap close contact-making surface (37) and snap close (13) cooperating of described protrusion again.
3. the free tripping mechanism of switchgear according to claim 2, it is characterized in that extending on the transition face (31) of described buckle again (1) locating detent (39) with support (22) cooperating, with determine under the snap close state again buckle (1) with respect to the position of support (22) and snap close (13) thereof by the lock degree of depth.
4. the free tripping mechanism of switchgear according to claim 2, it is characterized in that nearly release one side at the transition face (31) of described buckle again (1), be provided with a towing plate (33) with adjustment screw (11) cooperating of the bimetal leaf (7) of the armature (6) of short-circuit release and/or overload release, have a bending angle α, 120 °≤α≤150 ° between described towing plate (33) and the described transition face (31).
5. the free tripping mechanism of switchgear according to claim 4, it is characterized in that described towing plate (33) be provided with one with the switchgear housing on the towing plate branch (34) of emergency trip button cooperating, described towing plate branch (34) has an angle that more raises up than towing plate (33).
6. the free tripping mechanism of switchgear according to claim 1, it is characterized in that the adjustment screw (11) of described overload release and/or the armature (6) of short-circuit release, be≤2mm 〉=10mm with the passive distance of towing plate (33) under normal operation.
7. the free tripping mechanism of switchgear according to claim 2, it is characterized in that nearly tripping one side at the transition face (31) of described buckle again (1), be provided with retainer (38) with tripping (15) cooperating, by retainer (38), the tripping after the dropout (15) suppresses the transition rotation of buckle (1) again.
8. the free tripping mechanism of switchgear according to claim 7 is characterized in that described retainer (38) and has a bending angle β, 130 °≤β≤135 ° between the transition face (31) of buckle (1) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101669050A CN101685729B (en) | 2008-09-26 | 2008-09-26 | Free tripping mechanism of switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101669050A CN101685729B (en) | 2008-09-26 | 2008-09-26 | Free tripping mechanism of switchgear |
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| Publication Number | Publication Date |
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| CN101685729A true CN101685729A (en) | 2010-03-31 |
| CN101685729B CN101685729B (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101669050A Active CN101685729B (en) | 2008-09-26 | 2008-09-26 | Free tripping mechanism of switchgear |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820180A (en) * | 2012-08-27 | 2012-12-12 | 德力西电气有限公司 | Heat tripping system for air breaker |
| CN102842470A (en) * | 2011-10-17 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Switch device for temperature control |
| CN104517787A (en) * | 2013-09-30 | 2015-04-15 | Ls产电株式会社 | Breaker with magnet fixing device |
| CN108573834A (en) * | 2018-06-06 | 2018-09-25 | 河南森源电气股份有限公司 | Breaker and trip gear |
| CN109599305A (en) * | 2018-11-14 | 2019-04-09 | 东莞基业电气设备有限公司 | A kind of breaker of suitable debugging delayed releasing |
| CN113948349A (en) * | 2021-10-28 | 2022-01-18 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
| WO2022183910A1 (en) * | 2021-03-05 | 2022-09-09 | 上海电器科学研究所（集团）有限公司 | Operating mechanism for circuit breaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4040263A1 (en) * | 1990-12-17 | 1992-06-25 | Abb Patent Gmbh | INSTALLATION DEVICE |
| FR2690563B1 (en) * | 1992-04-23 | 1997-05-09 | Merlin Gerin | PLUG-IN CIRCUIT BREAKER WITH MOLDED HOUSING. |
| CN2582155Y (en) * | 2002-10-31 | 2003-10-22 | 浙江中信电器有限公司 | Plastic case circuit breaker |
| JP4253702B2 (en) * | 2006-04-18 | 2009-04-15 | 富士電機機器制御株式会社 | Circuit breaker |
| CN201282086Y (en) * | 2008-09-26 | 2009-07-29 | 浙江正泰电器股份有限公司 | Freely tripping device for switch equipment |
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2008
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842470A (en) * | 2011-10-17 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Switch device for temperature control |
| CN102820180A (en) * | 2012-08-27 | 2012-12-12 | 德力西电气有限公司 | Heat tripping system for air breaker |
| CN104517787A (en) * | 2013-09-30 | 2015-04-15 | Ls产电株式会社 | Breaker with magnet fixing device |
| CN104517787B (en) * | 2013-09-30 | 2017-01-11 | Ls产电株式会社 | Breaker with magnet fixing device |
| CN108573834A (en) * | 2018-06-06 | 2018-09-25 | 河南森源电气股份有限公司 | Breaker and trip gear |
| CN109599305A (en) * | 2018-11-14 | 2019-04-09 | 东莞基业电气设备有限公司 | A kind of breaker of suitable debugging delayed releasing |
| WO2022183910A1 (en) * | 2021-03-05 | 2022-09-09 | 上海电器科学研究所（集团）有限公司 | Operating mechanism for circuit breaker |
| CN113948349A (en) * | 2021-10-28 | 2022-01-18 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
| CN113948349B (en) * | 2021-10-28 | 2023-12-12 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN101685729B (en) | 2012-02-08 |
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